Logic X select and move tempo events

I think the tempo is going twice as fast as it is supposed to from m.97. How can I select the tempo events from measure 97 and drag them to half the tempo or, better yet, set them to exactly half the tempo? How could I set them to a proportionate tempo? I can drag over tempo events to select them, but when I try to drag them, they all deselect except for one.
Thank you in advance,